Regulating device for lamps



(No Model.)

R. L. DURAN;

REGULATING DEVICE FOR LAMPS. No. 546,282. Patented Sept. 10, 1895.

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ROBERT L. DORAN,-OF BAY CITY, MICHIGAN.

REGULATING DEVICE FOR LAMPS.

SPECIFICATION forming part of Letters Patent No. 546,282, dated September 10, 1895 Application filed A aze, 1895. Serial No. 4 (1% m To ail whom it may concern.-

Be itknown that I, ROBERT L. DORAN, a citizen of the United States, residing at Bay City, in the county of Bay and State of Michigan, have invented certain new and useful Improvements in Regulating Devices for Lamps, of which the following is a specification, reference being bad therein to the accompanying drawings.

The invention relates to that class of devices in which oil is fed to lamps under pressure from any desired source; and it consists in the peculiar construction of the regulating device for such oil-feed, whereby the lamps will be maintained at a constant flame without danger of going out or overflowing.

The invention in particular consists in the peculiar. construction of a valve comprising a stem, a port, and a compressible fibrous valve or packing between the stem and the port, through which the oil is fed to the burner, the feed being controlled or regulated by compressing this packing more or less by the valve-stem.

The invention further consists in the construction of an automatic actuating device for such valve, controlled by the flame of the burner, all as more fully hereinafter described.

In the drawings, Figure l is a sectional elevation showing my improved device as in use. Fig. 2 is a similar elevation showing the automatic device for actuating the valve. Fig. 3 is a horizontal section above the thermostatic ring.

A is the lamp-fount, B the burner, and C the chimney, of a lamp of any known or usual construction.

D is an oil-supply pipe leading into the fount. In this pipe at any desired point, preferably near the lamp, is the valve-casing E, having the partition or diaphragm with the concave seat a, in the bottom of which is the port 2').

G is a valve-stem. H is the packing-box through which the stem projects. I is a curved head on the lower end of the stem, above the concave seat in the diaphragm, and J is a fibrous valve or packing resting on the concave seat beneath the head I and adapted to control the flow of the oil through the port I).

L is a shut-off valve in the oil-supply pipe.

The fibrous valve or packing I preferably make of mineral wool, asbestos, or similar material, which, while porous and fibrous, has a certain amount of elasticity which will permit it to open and let the oil through when the pressure of the stem is removed.

The parts being thus constructed, they are intended to operate as follows: When the device is not in use, the shut-off valve in the oil-supply pipe is closed. Whenit is desired to use it, that valve is opened and the oil will flow through the pipe and the valve-casing E into the fount, the flow through the valvecasing being adjusted by raising or lowering the stem to make more or less pressure upon the fibrous valve. WVhen the proper amount of oil is supplied through this valvethat is, when the proper adjustment is hadthen the lamp will continue to burn as long as oil is supplied, the controlling-valve admitting justthe desired amount. I have found in practice that it is impossible to construct a valveseating in the ordinary manner to have a sufficientlyfine adjustment for this use; but with the fibrous valve described the flow may be regulated to the smallest possible amount, just sufficient to maintain the lamp at the desired flame.

I may apply a controlling device for the valve, and that which I have shown consists of the brass ring M, supported on top of the perforated air-sleeve N and secured at one side only, as by the pin 0. On the opposite side the ring is connected to the bell-crank lever P, which at its opposite end is connected to the stem G. This stem in this construction slides through the stuffing-box H, and as the ring M contracts and expands will raise and lower the stem, and thus increase or decrease the supply of oil, shutting it 01f as the flame gets too hot and opening the valve as it cools down, thus maintaining substantially a constant flame and a constant supply of oil to the wick.

W'hat I claim as my invention is- 1. The combination with a lamp, of acoutrolling device therefor, comprising a casing, a fibrous compressible packing therein, through which oil is adapted to flow continuously, and a stem for compressing the packing to regulate the flow of oil therethrough, substantially as described.

2. A controlling device for lamps comprising a casing having a. ported diaphragm, a

fibrous valve or packing thereon through which oil is adapted to flow continuously, and e stem for compacting said valve to con- 4. The combination with a, lamp, of the 15 fibrous valvethrough'which oil is adapted to flow continuously, the stem for compressing the same to regulate the flow of the oil through the valve, the thermostatic ring'M around the flame, and anoperetive connection there- 2) from to the stem, substantia-ilyas described. In testimony whereof I affix my signature in presence of two witnesses.

ROBERT L. DORAN.

\Vitnesses:

, JAMESWVHITTEMORE,

O. F. BARTHEL. 

